Plant support apparatus



FIG. 1 is a perspective view of a plant support apparatus showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof.

The broken lines in the drawings depict portions of the plant support apparatus which form no part of the claimed design. 

CLAIM The ornamental design for a plant support apparatus, as shown and described. 